The explorer is running in 'regtest' mode. This saves disk space, but there is limited data.
The code for this application can be found at github.com/pdxrod/blockchain_explorer.

home    blocks

Enter a block height, e.g. 123, or the start of a bitcoin address, e.g. mxMfLjAez

Height: 1556
Hash: 04de0cf48b30195b1abe3ed63bcb64bd680f88691949b9ae225360564896bfd7
Previous block: 2b2192f7a012aa9a7b031577d41d894d566766dfd31b18b71be0300ad0f27ec5
Next block: 5dc555ef0397905aca7646dafff6ddff82971be86b7fa52bb1587c8a205519d0
Weight: 908
Versionhex: 20000000
Version: 536870912
Transactions:
Time: 1718697667
Stripped size: 218
Size: 254
Nonce: 0
Merkle root: 0a65b41185ed6176175e082243b541ca91e56ef0712b72fbbad58453c31fa486
Median time: 1718697666
Difficulty: 4.656542373906925e-10
Confirmations: 688
Chainwork: 0000000000000000000000000000000000000000000000000000000000000c2a
Bits: 207fffff